Middleburg, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 58.8 °F (low) to 79.6 °F (high). Annual precipitation averages 55.1 Inches. Middleburg is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Jan. 21 - Jan. 31 through the first frost around Jan. 1 - Jan. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 43.3 °F | 65.2 °F | 3.42 in. |
| February | 45.9 °F | 68.2 °F | 2.77 in. |
| March | 50.7 °F | 73.9 °F | 3.49 in. |
| April | 56.9 °F | 80.3 °F | 2.88 in. |
| May | 64.3 °F | 86.1 °F | 3.79 in. |
| June | 70.6 °F | 89.6 °F | 7.91 in. |
| July | 72.6 °F | 91.5 °F | 7.47 in. |
| August | 73.0 °F | 90.7 °F | 7.24 in. |
| September | 70.1 °F | 87.9 °F | 7.54 in. |
| October | 61.2 °F | 81.1 °F | 4.05 in. |
| November | 51.4 °F | 73.1 °F | 1.97 in. |
| December | 46.0 °F | 68.0 °F | 2.54 in. |
| Annual | 58.8 °F | 79.6 °F | 55.07 in. |
| Average First Frost Date | Jan. 1 - Jan. 10 |
| Average Last Frost Date | Jan. 21 - Jan. 31 |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |